An Original? I am Sure!!!

Rating: Null/10 (17 May 2007)

Okay, Arguing with people and the internet is not providing answers!I have seen a film that is the original or a strong basis for 28 days later! Here is what i remember of it:
A guy who was fighting against zombies that can spread infection to others. He is hauled up in a room with a balcony with some flood lights to drive them away i think. He meets some other people who are trying to fight against them. One boy gets infected and they try and help him. They make a cure........... blah blah.
Someone else must of seen it! please anyway any help is great! It was quite good and really similar to 28days later maybe made in the 70's or 80's cheers